Totally Tom, London

Just like sand or the actor John Barrowman, posh people do get everywhere. Not content with conquering the twin bastions of Westminster and Sunday night telly, they now seem to be moving into sketch comedy. Tom Palmer and Tom Stourton (son of BBC newsreader Ed) are a duo of Old Etonian performers whose crisp social satires have so far won them a show on E4 and a nomination for Best Newcomer at last year's Edinburgh fringe. Where many sketch groups rely on reheating old ideas and classic set-ups, Totally Tom have a freshness of approach and a good eye for unexplored territory. They're at their best when nailing the idiocies of the idle young rich – gap year students, idiot undergraduates and the Chelsea set. Right now they're running their own comedy night at freshly launched east London club Deansways. Guests this week include excellent stand-up Diane Morgan and deadpan Welshman Matt Rees.

Deansways, E2, Wed

Jonny Sweet, On tour

Jonny Sweet. Photograph: Noel Mclaughlin

Jonny Sweet used to be in an act called House Of Windsor. The other two thirds of the group – Simon Bird and Joe Thomas – went on to Inbetweeners fame, while Sweet's been making a less obtrusive but no less critically acclaimed name for himself with a series of innovative solo shows. His stock-in-trade is the misconceived lecture, taking on a wildly improbable subject – in the past, blurbs on the back of books or the history of a naval warship – and using it as the basis for all sorts of unexpected flights of fancy. His PowerPoint presentations alone have to be seen to be believed. Sweet's currently touring as part of a package show from The Invisible Dot, the leftfield comedy promoters whose consistently inventive productions have won them and their acts a stack of awards.

The Tim Vine Chat Show, On tour

Tim Vine

If you've seen Tim Vine, you're likely to have worked out two things – first, he's a genius, and second, all he does is tell one-liners. A master of the pun, he manages to cram more gags into an hour than any other UK comic, and he's got a Guinness Book Of Records citation to prove it. Given that his regular shtick works so well, it's odd to see him branching out, but the quality of his Chat Show suggests it's been worth the creative investment. Here, the guests are drawn spontaneously from the audience. Sit in the right (or wrong place), and you might find yourself ushered onstage to discuss your long and varied career, or being inveigled into playing some deeply silly games. This might sound an awkward proposition for an audience, but with an act as warm, charming and thoroughly likable as Vine, it just makes for a more immersive but no less enjoyable experience.